How to Add Context Menu to RadGridView FilteringControl

Updated on Sep 15, 2025

Environment

Product

RadGridView for WPF

Description

How to display a context menu for elements inside the FilteringControl of the RadGridView.

Solution

Create a class that inherits from FilteringControl and handle the PreviewMouseRightButtonDown event. Inside the event handler, add the logic for displaying the context menu.

Example 1: Creating a custom FilteringControl

C#

	public class ExtendedFilteringControl : FilteringControl
    {
        public RadContextMenu contextMenu;

        public ExtendedFilteringControl(Telerik.Windows.Controls.GridViewColumn column)
        : base(column)
        {
            DefaultStyleKey = typeof(ExtendedFilteringControl);
            this.Loaded += FilteringControlEx_Loaded;
        }

        private void FilteringControlEx_Loaded(object sender, RoutedEventArgs e)
        {
            contextMenu = new RadContextMenu();
            contextMenu.Items.Add(new RadMenuItem() { Header = "Copy", Command = ApplicationCommands.Copy });
            this.PreviewMouseRightButtonDown += ExtendedFilteringControl_PreviewMouseRightButtonDown;
        }

        private void ExtendedFilteringControl_PreviewMouseRightButtonDown(object sender, MouseButtonEventArgs e)
        {
            var placementTarget = e.OriginalSource as FrameworkElement;

            if (placementTarget.ParentOfType<TextBox>() != null)
            {
                contextMenu.PlacementTarget = placementTarget;
                contextMenu.Placement = System.Windows.Controls.Primitives.PlacementMode.MousePoint;
                contextMenu.IsOpen = true;
            }
        }
    }

VB.NET

	Public Class ExtendedFilteringControl
	    Inherits FilteringControl

		Public contextMenu As RadContextMenu

		Public Sub New(ByVal column As Telerik.Windows.Controls.GridViewColumn)
			MyBase.New(column)
			DefaultStyleKey = GetType(ExtendedFilteringControl)
			AddHandler Me.Loaded, AddressOf FilteringControlEx_Loaded
		End Sub

		Private Sub FilteringControlEx_Loaded(ByVal sender As Object, ByVal e As RoutedEventArgs)
			contextMenu = New RadContextMenu()
			contextMenu.Items.Add(New RadMenuItem() With {
				.Header = "Copy",
				.Command = ApplicationCommands.Copy
			})
			AddHandler Me.PreviewMouseRightButtonDown, AddressOf ExtendedFilteringControl_PreviewMouseRightButtonDown
		End Sub

		Private Sub ExtendedFilteringControl_PreviewMouseRightButtonDown(ByVal sender As Object, ByVal e As MouseButtonEventArgs)
			Dim placementTarget = TryCast(e.OriginalSource, FrameworkElement)

			If placementTarget.ParentOfType(Of TextBox)() IsNot Nothing Then
				contextMenu.PlacementTarget = placementTarget
				contextMenu.Placement = System.Windows.Controls.Primitives.PlacementMode.MousePoint
				contextMenu.IsOpen = True
			End If
		End Sub
    End Class

Then you have to set the FilteringControl property of the columns which will utilize the custom control.

Example 2: Setting the FilteringControl of the columns

C#

	public partial class MainWindow : Window
    {
        public MainWindow()
        {
            InitializeComponent();

            this.AddCustomFilteringControls();
        }

        private void AddCustomFilteringControls()
        {
            foreach (var column in this.gridView.Columns)
            {
                column.FilteringControl = new ExtendedFilteringControl(column);
            }
        }
    }

VB.NET

	Partial Public Class MainWindow
	Inherits Window

		Public Sub New()
			InitializeComponent()

			Me.AddCustomFilteringControls()
		End Sub

		Private Sub AddCustomFilteringControls()
			For Each column In Me.gridView.Columns
				column.FilteringControl = New ExtendedFilteringControl(column)
			Next column
		End Sub
    End Class

The examples use the RadGridView setup from its Getting Started article.

If you are using the NoXaml dlls, you should base the style for the custom FilteringControl on the default one for the theme.

See Also

• RadGridView Getting Started